US2950986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet light absorbing compositions
Assignee: Union Carbide Corp
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Filing: 1957-08-22
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Granted: 1960-08-30
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Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bailey
- 👤 Ronald M Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:18
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/466; C; C08; C08K; C08K5/00; C08K5/54; C08K5/548; G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR PRODUCING GLASS ARTICLES OPAQUE TO ULTRAVIOLET LIGHT RADIATION, WHICH COMPRISES COATING THE SURFACE OF SAID GLASS ARTICLE ON AT LEAST ONE SIDE THEREOF WITH A SILICON-CONTAINING AMINE SALT OF A BENZOPHENONE SULFONIC ACID SELECTED FROM THE GROUP OF SILANE AMINE SALTS REPRESENTED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
49 words
A PROCESS FOR PRODUCING GLASS ARTICLES OPAQUE TO ULTRAVIOLET LIGHT RADIATION, WHICH COMPRISES COATING THE SURFACE OF SAID GLASS ARTICLE ON AT LEAST ONE SIDE THEREOF WITH A SILICON-CONTAINING AMINE SALT OF A BENZOPHENONE SULFONIC ACID SELECTED FROM THE GROUP OF SILANE AMINE SALTS REPRESENTED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |